Last official estimated population of St. Landry Parish was 83,500 (year 2014)[1]. This was 0.026% of total US population and 1.8% of total Louisiana state population. Area of St. Landry Parish is 939.0 mi² (=2432 km²), in this year population density was 88.93 p/mi². If population growth rate would be same as in period 2010-2014 (+0.03%/yr), St. Landry Parish population in 2026 would be 83,849 [0].
Historical population of St. Landry Parish for period 1810-2014 [1] , [2] , [3]:
Estimated population for 2014[1]. Population density is in p./sq.mi [4]. Changes are for period 2010-2015. Value is %/year. Boundary lines are approx. 2012 [5]. Click on flag to hide it.
Population • Density • Changes • Legends • Position

[1810-1820] +7.17 %/yr
[1820-1830] +2.24 %/yr
[1830-1840] +1.92 %/yr
[1840-1850] +3.86 %/yr
[1850-1860] +0.38 %/yr
[1860-1870] +1.01 %/yr
[1870-1880] +4.58 %/yr
[1880-1890] +0.06 %/yr
[1890-1900] +2.77 %/yr
[1900-1910] +2.34 %/yr
[1910-1920] -2.51 %/yr
[1920-1930] +1.51 %/yr
[1930-1940] +1.75 %/yr
[1940-1950] +0.94 %/yr
[1950-1960] +0.38 %/yr
[1960-1970] -0.14 %/yr
[1970-1980] +0.46 %/yr
[1980-1990] -0.46 %/yr
[1990-2000] +0.88 %/yr
[2000-2005] -0.86 %/yr
[2005-2010] -0.14 %/yr
[2010-2014] +0.03 %/yr
Looking for settlements in St. Landry Parish? Visit this page: Settlements in St. Landry Parish, LA
Population of St. Landry Parish by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 3419 | 3104 | 6,523 |
| 5 to 9 | 3224 | 3033 | 6,257 |
| 10 to 14 | 3188 | 3040 | 6,228 |
| 15 to 19 | 2826 | 2746 | 5,572 |
| 20 to 24 | 2662 | 2787 | 5,449 |
| 25 to 29 | 2494 | 2737 | 5,231 |
| 30 to 34 | 2454 | 2770 | 5,224 |
| 35 to 39 | 2147 | 2420 | 4,567 |
| 40 to 44 | 2162 | 2385 | 4,547 |
| 45 to 49 | 2448 | 2659 | 5,107 |
| 50 to 54 | 2798 | 3105 | 5,903 |
| 55 to 59 | 2799 | 2938 | 5,737 |
| 60 to 64 | 2327 | 2611 | 4,938 |
| 65 to 69 | 1876 | 2151 | 4,027 |
| 70 to 74 | 1365 | 1674 | 3,039 |
| 75 to 79 | 987 | 1287 | 2,274 |
| 80 to 84 | 692 | 998 | 1,690 |
| 85+ | 436 | 960 | 1,396 |
St. Landry Parish resident population estimates by Sex, Race, and Hispanic Origin[1b]. For full list of abbrevations see: population.us/about page.
| Race | Male | Female | Total |
| NH | 39506 | 42581 | 82,087 |
| WAC | 23481 | 24793 | 48,274 |
| WA | 23025 | 24330 | 47,355 |
| NHWAC | 22813 | 24144 | 46,957 |
| NHWA | 22397 | 23727 | 46,124 |
| BAC | 16794 | 18536 | 35,330 |
| NHBAC | 16670 | 18378 | 35,048 |
| BA | 16426 | 18170 | 34,596 |
| NHBA | 16325 | 18041 | 34,366 |
| H | 798 | 824 | 1,622 |
| HWAC | 668 | 649 | 1,317 |
| HWA | 628 | 603 | 1,231 |
| TOM | 514 | 539 | 1,053 |
| NHTOM | 469 | 482 | 951 |
| IAC | 282 | 324 | 606 |
| AAC | 254 | 283 | 537 |
| NHIAC | 248 | 276 | 524 |
| NHAAC | 239 | 263 | 502 |
| AA | 187 | 202 | 389 |
| NHAA | 181 | 193 | 374 |
| IA | 146 | 156 | 302 |
| HBAC | 124 | 158 | 282 |
| NHIA | 130 | 134 | 264 |
| HBA | 101 | 129 | 230 |
| HTOM | 45 | 57 | 102 |
| NAC | 39 | 44 | 83 |
| HIAC | 34 | 48 | 82 |
| NHNAC | 31 | 35 | 66 |
| HIA | 16 | 22 | 38 |
| HAAC | 15 | 20 | 35 |
| HNAC | 8 | 9 | 17 |
| HAA | 6 | 9 | 15 |
| NA | 6 | 8 | 14 |
| NHNA | 4 | 4 | 8 |
| HNA | 2 | 4 | 6 |
• Lafayette Parish population
26.4 mi,
189°
• Acadia Parish
32.2 mi,
231°
• St. Martin Parish
39.1 mi,
144°
• Avoyelles Parish
34.7 mi,
359°
• Evangeline Parish
26.4 mi,
291°
• Iberville Parish
43 mi,
120°
• Allen Parish
49.6 mi,
275°
• West Baton Rouge Parish
41.3 mi,
101°
• Pointe Coupee Parish
24.4 mi,
69°
• West Feliciana Parish
39.2 mi,
59°
[0] Calculated by population.us from last known population growth rate, not official data.
[1] County population - 2014, archived from the original, retrieved 02/23/2016
[1b] Annual County Resident Population Estimates by Age, Sex, Race, and Hispanic Origin, (used only data for 2014) archived from the original, retrieved 02/23/2016
[2] County population - 2000-2010, archived from the original, retrieved 02/23/2016
[3] Population of States and Counties of the United States: 1790 to 1992, PDF, 15 Mb, census.gov, retrieved 02/23/2016
[4] County area, latitude longitude data, retrieved 02/23/2016
[5] County boundaries, CSV files on boundaries.us, retrived 03/18/2016
1810: Opelousas Louisiana Notes
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